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Finding the Fourth Proportional to 15,017.59, 20,724.86 and 9,973.11

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Solution

The fourth proportional to 15,017.59, 20,724.86 and 9,973.11 is: 13,763.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,017.59 : 20,724.86 = 9,973.11 : x
  2. Step 2: Convert to fraction form
    15,017.59/20,724.86 = 9,973.11/x
  3. Step 3: Cross multiply
    15,017.59x = 20,724.86 × 9,973.11
  4. Step 4: Simplify right side
    15,017.59x = 206,691,308.51
  5. Step 5: Solve for x
    x = 206,691,308.51/15,017.59
  6. Step 6: Final answer
    x = 13,763.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.